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Identify the type of chemical reaction taking place
i. on making a solution of potassium chloride with silver nitrate, an insoluble white substance is formed.
ii. on heating green coloured ferrous sulphate crystals, reddish-brown solid is left and smell of a gas having odor of burning Sulphur is observed.
A,B and C are three elements which undergo chemical reactions according to the following equations.
A2O3 + 2B → B2O3 + 2A
3CSO4 + 2B → B2(SO4)3 + 3C
3CO + 2A → A2O3 + 3C
Answer the following questions with reasons.
a. Which element is the most reactive?
b. Which element is the least reactive?
c. What is the type of reactions listed above?
Observe the diagram given alongside and answer the following questions:
a. What do you observe when lead nitrate is heated?
b. Mention the two gases evolved equation for it.
c. Write the balanced chemical equation for it.
d. What is the type of chemical reaction called?
e. Give one more example of this type of reaction.
Write balanced chemical equations for the following word equations:
(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
(b) Phosphorus pentachloride + Water Phosphoric acid + Hydrogen chloride
(c) Zinc + Silver nitrate Zinc nitrate + Silver
(d) Sodium + water sodium hydroxide + Hydrogen
(e) Aluminium + Copper chloride Aluminium chloride + Copper